a 45.91 mg sample of a pure radioisotope has a half-life of 52 days, what will be the mass of the original radioisotope after 1 year (365 days)

Q: The half-life of bismuth-210, 210Bi, is 5 days.(a) If a sample has a mass of 200 mg, find the amount…

A: Solution-  (a)-The half life periods of Bismuth-210 is 5days.the rate of decay of any substance…

Q: 2. A sample of iodine-126 with an original mass of 15.00 mg loses 13.125 mg of the original mass of…

A: When the quantity is reduced to one-half of the original of a radioactive sample, then the time…

Q: Carbon-14 measurements on the linen wrappings from the Book of Isaiah on the Dead Sea Scrolls…

A: Given in the question, 79.5% of the carbon-14 is found in living tissue. Half life of C-14 = 5730…

Q: Iodine-131 has a half life of 8 days. Your friend with a thyroid condition is given 40 mg of I-131…

A: Radioactive decay follows the first-order kinetics. The half-life of the first-order reaction does…

Q: Carbon-14 is used in radiocarbon dating. The half-life of carbon-14 is 5.73*10^3 years. How many…

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Q: bromine-88 is radioactive and has a half life of 16.3 seconds. how long would it take a sample to…

A: Applying concept of radioactive decay as first order reaction.

Q: Iodine-131 has a half-life of 8.0 days. How long will it take 10 µg of 131I to decrease to 1/100 of…

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Q: If sample made up of Glunitie 142 with a half life of 7 days contained 93.75% daughter atoms, how…

A: The question is based on the concept of chemical kinetics. we have to calculate the age of the given…

Q: Half-life is the time required for a radioactive element to decay to half of its original mass.…

A: Given: The % of original radium sample=100% The % of a sample of radium that has decayed=75% The…

Q: A radioactive isotope has a half-life of 84.3 minutes. How long will it take for the radiation from…

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Q: If 1.50 gram of a 2.00-gram sample of a radioactive substance undergoes decay in 60 minutes, then…

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Q: After 20 years, only 3.125% of the initial amount of radioactive isotope is left. What is the…

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Q: Suppose that 10 units of beryllium are present in a living organism and that the half-life of…

A: Here i have calculated the age of material

Q: 32.  A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What…

A: Given : Half life = 5700 years

Q: The initial amount of the radioactive material V in a rock is determined to be 6.78 mg. Only 1.46 mg…

A: final answer is = 5.3200 mg

Q: pile of radioactive material with a half-life of 10 years needs to sit until 0.0039 of the original…

A:

Q: 3. An archeologist unearths a bone sample and wants to know the age of the initial amount of…

A: Given:  Present amount of bone = 49 %  Half life = 5730 years

Q: A substance has a half-life of 26 years. presently, if there are 6293 grams of the said substance,…

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Q: At the beginning of an experiment, a scientist has 228 grams of radioactive goo. After 135 minutes,…

A: Hi! there, since there are multiple questions posted. We are answering first question. If you need…

Q: 100.0 grams of an isotope with a half-life of 36.0 hours is present at time zero. How much time will…

A: Radioactive decay follows first order kinetics. Given that half life is 36 hours. So the rate…

Q: about how much would have been left after three half-lives? A parent isotope has a half-life of 500…

A: Note : As per guidelines we can answer only the first question   The time it takes for the…

Q: Carbon-14 has a half-life of 5730 years, how old is a dress that was found to have a specific…

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Q: A wooden boat discovered just south of the Great Pyramid in Egypt had a carbon-14 content of…

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Q: Calculate how long will it take for a sample of a radionuclide with a half-life of 31.3 days decay…

A: Given, Half life = 31.3 days  Time , t = ?

Q: days. Suppose the initial amount of Thorium-234 is 192.9 mg, find the amount of Thorium-234 remains…

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Q: A radioactive isotope has a half-life of 41.7 minutes. how long will it take for the radiation from…

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Q: the Cs-131 by life has a half life of 30 years. after 120 years, 2.6 g remain. what is the original…

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Q: A radioactive isotope has a half-life of 24.5 minutes. how long will it take for the radiation from…

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Q: An archeological sample was predicted to be 9,415 years old. If the C-14 measured at present in the…

A:

Q: If a radioisotope's half-life is 2 minutes, after two half-lives there is left   0% of the original…

A: Given, a radioisotope's half-life is 2 minutes.we are asked to calculate the amount of original…

Q: Consider a certain type of nucleus that has a half-life of 32 min. Calculate the percent of original…

A: Given: The half life, (t1/2)=32 min. The time of disintegration , (t)=1.9 hrs=(1.9*60)=114 min.…

Q: 1. If the amount of the parent isotope in the original sample of a rock had been 48 grams, about how…

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Q: Gallium-67 is used medically in tumor-seeking agents. The half-life of gallium-67 is 78.2 hours. If…

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Q: The iodine-131 nuclide has a half-life of 8.0 days. If you originally have a sample containing 728-g…

A: Known: Half-life  = 8.0 days Original mass = 728 g Time elapsed = 6.86 weeks = (6.86 ×7)…

Q: Cobalt-60 is commonly used as a source of beta-particles. How long does it take for 87.5 perxent of…

A: The decay reactions first order reactions. Since we know that the relationship between the amount of…

Q: 24. A radioactive substance weighing 18.00 grams undergoes radioactive decay in 12.5 days and has…

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Q: Certain radioactive isotope has a half-life of 3.9 minutes. If we initially have 7168 grams of this…

A: According to the question, we have: Half life of radioactive isotope = 3.9 minutes.  Initial mass =…

Q: The half-life of carbon-14 is 5730 years. What does this statement mean? [A] It means that carbon-14…

A: Given: The half-life t12 of carbon-14 is 5730 years

Q: A 50.0g sample of nitrogen-16 takes 14.4 second to decay to a mass of 12.5G. Calculate the half life…

A: Given: The time taken by N-16 to undergo decay, t = 14.4 sec The initial amount of N-16, No = 50.0 g…

Q: The cesium-131 nuclide has a half-life of 30 years. After 120 years, about 3 g remains. The original…

A:

Q: The half-life of carbon-14 is 5730 years. The wrapping of an Egyptian mummy gave off 3.8 counts per…

A: From the given data we haveHalf life of carbon-14=5730 yearsWrapping of mummy=3.8…

Q: A radioactive isotope has a half-life of 46.3 minutes. how long will it take for the radiation from…

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Q: Assuming two samples of radioisotopes both contain the same number of atoms, the activity of the…

A: An element remains 50% of the original amount in its half-life period.

Q: If a substance has a half life of 1500 years, and an initial mass of 1000 grams, how much of the…

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Q: If 1.50 gram of a 2.00 gram sample of a radioactive substance undergoes decay in 60 minutes, then…

A:

Q: The half-life of 14C is 5730 years. A sample contains 90.8 % of the 14C that it would contain if it…

A: Age of a given sample can be calculated using Carbon dating method :

Q: How long will it take a radioactive sample of iodine-131 (half-life 8.07 d) to lose

A: The spontaneous disintegration of alpha, beta and gamma radiations by a substance irrespective of…

Q: A specimen of charcoal found contains 57% as much 14C as a sample of present day charcoal. What is…

A: Radioactive decay follows the first-order kinetics. The decay constant (λ) and half-life of a…

Q: A wooden object from an archeological site is subjected to radiocarbon dating. The activity due to…

A: Since the decay reactions are first order reactions And we know that the relationship between the…

Q: The cesium-137 has a half life of 30 years after 90 years about 10g.remains. the original mass of…

A: